Probably bare basics are a good climbing saw. If you wnat the best most here will tell you to buy the MS200T, you could go a lil cheaper and get a 192T if you will only be using it to cut small stuff and you don't expect quite as much out of it. Husky and Echo also make decent top handles. You could ditch the top handle idea and just get a compact tail handle saw like a Stihl MS210 or even MS170, or Husky equivalent. After that, I only know Stihls very well, but you'll wnat something in the 50-60cc range, which for Stihl would be either a MS260 or MS361 and then something over 3.8 cubes, maybe an MS440 or 460. You probably don't really need the 660 or bigger unless you are cutting down some massive western conifers or grandaddy live oaks in the east. Bear in mind, if you prefer Husky, Jonsred, Echo, and some will say Sachs-Dolmar also make a quality saw and they have offerings in this range you might want to check out. But I strongly suspect you'll wnat your climbing saw to be an MS200T or older 020T. Good luck,
J.D.